2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222225We outline a method of deriving one-dimensional phaseless visibility along solar wind direction from interplanetary scintillation power spectrum, together with the known visibility of a calibration source. The method is illustrated briefly. Details may be found in Edwin Jayaraj (1990).3 pages, 1 figure, 1 table, method used by S Edwin Jayaraj for MPhil project of Madurai Kamaraj UniversityEarth and Planetary AstrophysicsSolar and Stellar Astrophysicstext